When driving 45 mph or less the car operates at about 1800 rpm. 55 = 2100 rpm 65 = 2500 rpm75 = 3100 rpm The transmission starts to get hot at speeds above 55 mph. If I stay off the interstate the car runs perfectly. I just had a major tune up, other than the high operating speed and a slight increase in temperature (I constantly monitored the temp when driving for diagnostics) the car is running perfectly. The car has 117,000 miles. Also, this car lived in Alaska for the first 18 years of its life. I recently relocated to Florida, I'm pretty sure that my car does not like the hot temps!

6 Answers

The overdrive band in your transmission might be burnt not allowing it to engage keeping your rpms high. Only way to fix is to replace, which always means a transmission rebuild. Drive it as is until you can repair it, or consider another vehicle.

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